The activated carbon pre-filter helps capture large airborne particles and reduces odors and VOCs. The HPA5100's effective design and filtration can circulate and clean the air an amazing 4.InSight HEPA Air Purifier, 190 sq ft Room Capacity, Black Additional optional enhanced odor and VOC filters can be purchased separately, to help tackle specific household odors and VOCs from pets, kitchens, smoke or home renovation.